Added backwards compatible feature that excludes entries with None

src/shared_models/message.py

@@ -112,7 +112,9 @@ class Message:
 			raise MessageValidationError(issues)
 		return cls(title, body, link, category, timestamp)
 
-	def to_dict(self) -> dict[str, Any]:
+	def to_dict(self, *, exclude_none: bool = False) -> dict[str, Any]:
 		d = asdict(self)
 		d["category"] = self.category.value
+		if exclude_none:
+			d = {k: v for k, v in d.items() if v is not None}
 		return d